Patents Assigned to BASF
  • Preparation of 4-pentenoates
    Patent number: 4740613
    Abstract: 4-Pentenoates of the formula ##STR1## where R is alkyl of from 1 to 6 carbon atoms, are prepared by a process in which 5-methylbutyrolactone of the formula ##STR2## is reacted with an alcohol of the formulaR--O--H III,where R has the above meaning, at from 150.degree. to 400.degree. C. in the presence of an acidic catalyst.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: April 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fischer, Uwe Vagi
  • Preparation of 1,2-dichloroethane by oxychlorination of ethylene over a copper-containing supported catalyst
    Patent number: 4740644
    Abstract: 1,2-Dichloroethane is prepared by oxychlorination of ethylene in the presence of a catalyst which contains, on a conventional carrier, copper(II) chloride in a concentration such that the amount of copper ions is from 1 to 20% by weight, based on the total weight of the catalyst, by a process in which the catalyst is obtained by impregnating the carrier with an aqueous solution which contains copper(II) chloride and hydrogen chloride in amounts such that the weight ratio of copper ions to hydrogen chloride is from 13:1 to 130:1.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: April 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Dieter Eichhorn, Hans H. Schneehage, Luc Cordemans, Werner Hebgen, Christof Jaeckh, Wolf D. Mross
  • Cyclohexane-1,3-dione derivatives and their use for controlling undesirable plant growth
    Patent number: 4740237
    Abstract: Cyclohexane-1,3-dione derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the meanings given in the description, are used for controlling undesirable plant growth.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: April 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Jahn, Rainer Becker, Norbert Goetz, Hardo Siegel, Bruno Wuerzer
  • Preparation of ethylene glycol
    Patent number: 4740525
    Abstract: Ethylene glycol is prepared from carbon monoxide and hydrogen in homogeneous liquid phase under superatmospheric pressure and at elevated temperature in the presence of a rhodium-containing catalyst and in the presence of an organic solvent, the organic solvent used being a C.sub.2 -C.sub.20 -n-alkanol and the concentration of this alkanol, based on the total amount of the mixture, constantly being maintained at not less than 50% by weight.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: April 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Robert Maerkl, Werner Bertleff, Wolfgang Harder, Rudolf Kummer
  • Preparation of polyamidoimide coatings having a long shelf life
    Patent number: 4740576
    Abstract: Polyamidoimide coatings having a long shelf life are prepared by a process in which a tricarboxylic anhydride, some of which may have been replaced by tetracarboxylic dianhydrides or dicarboxylic acids, is reacted with a polyisocyanate possessing 2 or more isocyanate groups in an organic solvent which is inert to isocyanate groups, from 0.7 to 0.98 isocyanate group being employed per anhydride and carboxyl group, and completely blocked polyisocyanate being added to the reaction mixture before, during or after the reaction in an amount such that the ratio of the total amount of anhydride and carboxyl groups employed to the total amount of isocyanate groups used, including those present in blocked form, is from 1:1 to 1:1.1.The polyamidoimide coatings are useful for coating electric conductors.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: April 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Udo Reiter, Hans-Josef Oslowski, Paul Boerzel
  • Process for the preparation of N,o-substituted mono- and/or polyurethanes
    Patent number: 4740610
    Abstract: The invention describes a process for the preparation of N,o-substituted mono- and/or polyurethanes of formulaR.sup.1 [--NHCOOR.sup.2 ].sub.n,in whichR.sup.1 is an aliphatic, cycloaliphatic, aromatic, araliphatic, or heterocyclic radical, which may be substituted,R.sup.2 is an aliphatic, cycloaliphatic, or araliphatic radical which may be substituted with alkoxy or polyoxyalkylene groups, andn is a whole number from 1 to 5,through the reaction of N-substituted allophanates and/or polyallophanates with alcohols R.sup.2 OH in the presence or absence of catalysts at temperatures of at least 160.degree. C., preferably from 165.degree. to 250.degree. C.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: April 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Merger, Friedrich Towae
  • Thermoplastic molding compositions
    Patent number: 4739010
    Abstract: Thermoplastic molding compositions which contain(A) 50-99% by weight of a polyalkylene terephthalate and/or of a polycarbonate and(B) 1-50% by weight of an elastomeric polymer having epoxy and/or carboxyl groups on the surface,wherein component (B) is a graft polymer prepared by emulsion polymerization and has a glass transition temperature of below 0.degree. C. and a gel content of not less than 50%, have a high impact strength even at low temperatures.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: April 19, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Graham E. McKee, Georg N. Simon, Dietrich Lausberg, Friedrich Kleber, Karl Schlichting
  • Apparatus for positioning a plurality of magnetic heads over preselected tracks of at least two recording disks
    Patent number: 4739430
    Abstract: The invention relates to an apparatus for positioning a plurality of scanning devices, in particular magnetic heads, over preselected tracks on a stack of at least two rotatable recording disks in a memory processing unit, in which apparatus the single-beam section of the supporting arm of the magnetic heads has been produced integral with the head tower and is provided with mounting means for at least one magnetic head on a spring-supporting means, in particular for a pair of magnetic heads previously connected to one another, so that it is possible to replace any head or pair of heads. The apparatus can be used in magnetic storage systems, industrial production equipment etc.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: April 19, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Manzke, Peter Hammerschmitt, Hans-Joachim Weis
  • Coating carbon fibers
    Patent number: 4738757
    Abstract: Electrically conductive layers are applied on to carbon fibers or filaments or sheet-like structures of these by a process in which monomers from the class consisting of the anilines or of the pyrroles or thiophenes are polymerized on the surface of the carbon structures in the presence of an electrolyte.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: April 19, 1988
    Assignee: BASF aktiengesellschaft
    Inventor: Herbert Naarmann
  • Preparation of morpholine
    Patent number: 4739051
    Abstract: Morpholine and other cyclic imines are obtained by reacting diethylene glycol and other appropriate diols with ammonia under hydrogenating conditions in the gas phase in the presence of a catalyst which contains copper, a smaller amount of nickel and alumina.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: April 19, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Schroeder, Wolfgang Lengsfeld, Gerd Heilen, Otto Hertel, Guenter Boettger
  • 2H-v-triazolo[4-5-d]pyrimidines
    Patent number: 4739053
    Abstract: Novel 2H-v-triazolo[4,5-d]pyrimidines of the general formula ##STR1## where R.sup.1 and R.sup.2 independently of one another are each alkyl, unsubstituted or substituted phenyl or phenalkyl, or ##STR2## is a saturated 5-membered or 6-membered heterocyclic ring, X is alkyl, halogen or phenyl n is 0, 1 or 2, and A is ##STR3## hydrogen, halogen, cyano, thiocyano, alkoxy, alkoxyalkoxy, unsubstituted or substituted phenoxy, phenylalkoxy, alkylthio, phenylthio, --S--(CH.sub.2).sub.m --COO-alkyl, where m is from 1 to 4, alkylcarbonyl, benzoyl, carboxyl, carboalkoxy, alkylsulfonyl, phenylsulfonyl, an N-imidazole, benzimidazole, 1,2,3-triazole, benzotriazole, 2-mercaptobenzothiazole, 2-mercaptobenzimidazole, 2-mercaptothiazole or 2-mercapto-1,3,4-thiadiazole radical, or a radical of the formula ##STR4## where R.sup.4 is H or C.sub.1 -C.sub.4 -alkyl, p is from 2 to 5 and R.sup.5 and R.sup.6 are each C.sub.1 -C.sub.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: April 19, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Albert, Gerhard Hoffmann, Peter Neumann
  • Storage stable polyisocyanates characterized by allophanate linkages
    Patent number: 4738991
    Abstract: Organic polyisocyanates characterized by allophanate linkages are prepared by reacting an organic polyisocyanate with a mono- or polyhydric compound in the presence of an organo metal catalyst. The catalyst is then deactivated using a compound such as an inorganic acid, organic acid, organic chloroformate or an organic acid chloride. The isocyanates are useful in preparing polyurethane foams.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: April 19, 1988
    Assignee: BASF Corporation
    Inventor: Thirumurti Narayan
  • Preparation of bead polymers based on water-soluble ethylenically unsaturated monomers by reverse suspension polymerization
    Patent number: 4739009
    Abstract: Bead polymers are prepared by reverse suspension polymerization by a process in which an aqueous solution of water-soluble ethylenically unsaturated monomers are polymerized in an aliphatic hydrocarbon using an inorganic suspending agent based on a modified finely divided mineral and, in addition, from 0.1 to 5% by weight, based on the monomers used, of a nonionic surfactant, in the presence of a polymerization initiator, with the formation of a water-in-oil polymer suspension.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: April 19, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Wilfried Heide, Heinrich Hartmann, Christos Vamvakaris
  • Process and device for the preparation of fiber composite materials
    Patent number: 4738868
    Abstract: A continuous process for the preparation of fiber composite materials by impregnating fiber reinforcing material with a solution of a thermoplastic or thermosetting plastic precursor, followed by evaporating the solvent used by means of exposure to light having a wave length corresponding to the absorption maximum of the solvent.
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: April 19, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Fischer, Artur Roeber
  • Rim microcellular polyurethane elastomer employing heteric or internal block ethylene oxide polyols
    Patent number: 4738993
    Abstract: A RIM polyurethane elastomer prepared by reacting an organic polyisocyanate, a polyoxyalkylene polyether polyol, and a chain extender. The polyol contains from about 7 weight percent to about 40 weight percent ethylene oxide either as a block or a heteric structure.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: April 19, 1988
    Assignee: BASF Corporation
    Inventor: Robert A. Markovs
  • Tape guide means for a tape to be transported, in particular in a magnetic tape cassette or in a tape transport apparatus
    Patent number: 4736904
    Abstract: A guide means for tapes to be transported, in particular in tape cassettes or tape apparatus, comprises a support element and a flexible guide strip, in particular one made of metal foil, fixed on this, and at least one holding element for the end sections of the flexible guide strip. The guide strip possesses a predetermined thickness and may be drop-shaped or pear-shaped in the operating position. The tape guide means may also comprise a support element whose surface is at least partially cylindrical and a flexible guide strip which is fastened thereon. As a separable unit which can be preassembled, the tape guide means can therefore also be employed for automatic manufacture. The tape guide means can be used for tape guides which are either stationary or movable within limits, in the field of tape-like recording media, such as films, magnetic tapes, punched tapes, etc.
    Type: Grant
    Filed: December 24, 1985
    Date of Patent: April 12, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schoettle, Lothar Gliniorz, Kurt Schmidts, Eugen Kamm, Herbert Dietze, Wulf Muenzner, Dieter Gaiser, Artur Buhk, Juergen Dreyer
  • Preparation of hydroxylamine-O-sulfonic acid
    Patent number: 4737354
    Abstract: Hydroxylamine-O-sulfonic acid is prepared by(a) reacting hydroxylammonium sulfate with oleum at elevated temperatures,(b) isolating sulfuric acid from the hydroxylamine-O-sulfonic acid formed,(c) diluting the sulfuric acid which was obtained in stage (b) and which still contains hydroxylamino-O-sulfonic acid with water to 2-6N and heating it to 30.degree.-80.degree. C. for 1-10 hours,(d) preparing hydroxylamine by catalytic reduction of nitrogen monoxide with hydrogen using the dilute sulfuric acid from stage (c) in the presence of a noble metal catalyst at elevated temperatures.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: April 12, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Hugo Fuchs, Franz-Josef Weiss, Erwin Thomas, Josef Ritz
  • N-alkyl-2,6-dimethylmorpholinocarboxamide salts, compositions and their use as fungicides
    Patent number: 4737498
    Abstract: Novel N-alkyl-2,6-dimethylmorpholinocarboxamide salts of the general formula I, ##STR1## processes for their preparation, and their use as fungicides for controlling pathogenic fungi. The agents according to the invention additionally possess plant growth-regulating properties. The meanings of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and X.sup.- are given in the description.
    Type: Grant
    Filed: July 2, 1986
    Date of Patent: April 12, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Lothar Banasiak, Wilfried Edlich, Horst Lyr, Eva Nega, Marianne Sunkel
  • Purification of hTNF
    Patent number: 4736020
    Abstract: The purification of hTNF by ion exchange chromatography is described.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: April 5, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Hillen, Peter Moesta, Stefan Marcinowski
  • Seed protective coating
    Patent number: 4735015
    Abstract: A plant seed is prepared by enveloping the seed in a coating of a film-forming composition comprising certain polyoxyethylene-polyoxybutylene block copolymers.
    Type: Grant
    Filed: November 25, 1983
    Date of Patent: April 5, 1988
    Assignee: BASF Corporation
    Inventor: Irving R. Schmolka